US928945A - Type-writing machine. - Google Patents

Description

H. G. DAVIS.

TYPE WRITING MACHINE.

APPLICATION FILED OUT. 2, 1908.

Patented July 27, 1909.

HELENA e. nAvIs, or, EAST LAKE, ALABAMA.

TYPE-WRITING MACHINE.

Specification of Letters Patent. I

To all whom it may concern:

Be it knou n that I, HELENA G. DAvis, a

- citizen of the United States of America, and

a resident of East Lake, county of Jefferson, State of Alabama, have invented certain new and useful Improvements in Type-Writing Machines, of v. hich the follow: in g is a specification, reference being had .to the accompanying drawings, forining'a part thereof My invention relates "to improvements in tvpewrit'ing machines and particularly to that cla of typewriting machines v hich employ ,atype n heel' or segment and a hammer' for producing an impression. In this class of machine, it is common to employ an impact strip of yielding material such as rubber which is normallyrcarried-at a point in the machine between. the face of the type. vsheel or segment at the printing point and" this impact stri may heremoves will bccause, while it is useful for ordinal." work, its presence is highl undesirable vhen: the machine is being emp oyed formanifol ing, stencil cutting work etc. j I. flhe object of my present invention is to provide a means 1whereby such itmjmpact strip may be readily moved tov ardandlavgay from its workin position, and to thisendI'y provide an anxi iary frame for carryingthe said impact strip instead, of mounting-the impact strip on the main frame of the car'- riage as has been common'heretofore, andprovide, whereby'the auxiliary frame may e readily moved between two positions; on

being such as to hold the strip in place for." operative use, and the other being a position wherein. the strip v. ill be held clear of the printing elements and out of the way of the operator. I also preferably provide a guidingmeans for suitably guiding the strip into place all as will be explained hereinajfter in detail.

In order that my invention may be fully understood, I will now proceed to describe, in detail, an embodiment of my inventionhaving reference to the aCQQmpanying drawings illustrating the same,an'd will then point out the novel features in claims.

In the drawings: Figure 1 is an end view of such parts of a typewriting machine as are necessary to illustrate'my invention, a movable impact strip constructed in accordance with m invention being illustrated there'- Application filed'O'ctober 2,190 8. Serial No. 455,906;

, uifckly so the impression,hammer. It is desirable that}; 3h

may be so mounted that it from'its normal position at an'fopening 14 of a width only smiicient to with. *ig. 2 is a top view thereof, certain Patented July 27, 1909..

parts being broken away, and other parts shown in section. Fig. 3 1s a view in vert1cal being taken upon the line 33 of Fig. 1. Fig. 4 is a detail end view of the strip and longitudinal section, the plane of section carrier, the same being shown in various positions in order to illustrate the path of movement thereof.

lhe class of machine in connection with which I have illustrated my invention. is the well known Hammond machine in which is employed a rotatable type t heel or segment 10 and a vibrating hammer 11f; In this type of machine, the type v heater segment :10 is fi'rst moved. sons to :brin g the proper charac I ter opposite the printing point, which is in line'with theface of the hammer 11, and the hammeris then caused to move forward as to give a blow upon the type gametes An ink ribb on' 12 is carried by a uitable mi e11 guide across the path ofthegprinting a shield piece 13 is provide having permit the impressionof one ty e character at any time. The paper or car 'uppn v hich it is desired-to make the impression-1s carried in the carriage 15,'the part to receive the 1mpression lyingimr'nediatel hack of the. shield '13, the ribbon being disposed. between the shield and type v. heel or segmentg- I Dis osed lengthvfise'in the machine and at 'a'poin immediately-at the rear of .the paper osition, so that the peror card comes etween it and the.

or card when it is in hield' 13', is an impact strip 16, the said III): pact strip being composed of rubber or some iother yielding material; It has been com- 1non,.in the past, to mount this strip .upon the main carriage frame of the machine, but in the present invention, I provide an auxiliary frame or carrier comprising two arms 17 and a bar or rod 18. The bar or rod 18 is pivotally mounted upon the carriage frame of the machine, and is provided at the end with a knurled knobor hand piece 19 by which it may be manipulated. The arms 17 lie close to the relatively stationary arms 20 of the paper carriage 15, being provided with parts 21 turned at right angles thereto, which parts c'arrystudsl22 upon which the strip 16 is mounted. The two arms 17 are secured fast to the ba'r or rod 18 so that they will turn therewith. In Fig. 1, the auxiliary frame is shown in its normal position holding the stri in the proper position for'ordinar'y use. Vi hen it is desired to move the strip away from its operative position, the auxiliary frame or carrier may be turned over by manipulation of the knob 19 and thrown into the position inwhich it is shown in full lines in Fig. 4:. I employ suitable means for retaining the arts in either of the described positions, suci means conveniently being a ight spring 23'secured at one end to one of the carriage arms 20, and at the other end to a pin 24 upon one of the auxiliary frame arms 17.

In order to compel the strip to. clear the shield 13 and ribbon 12 as it is being swung into and out of lace, I provide suitable guiding pieces 25, tiie function of which is to deflect the impact strip slightly out of the path through which it would otherwise travel, as will be clearly understood by reference to Fig. 4 of the drawings. These guide pieces may be secured to any suitable part of the machine, and as a matter of convenience, l have shown them, in the present instance, .as

uprising from the line gages 26 which are commonly employed in the machine.

,From. the foregoing, it will be seen that by the employment of my auxiliary carrier frame, I am enabled to throw the impact strip into and out of operative position at will, and by this means am able to adjust the machine in an instant either for use with or without the said impact strip. It will furthermorc bmscen that should the impact strip be required to be renewed at any time or to be cleansed, such operations are very much more easily iarried out where my device is employed than in a machine where the strip has but one position in the machine.

What I claim is:

1. In a typewriting machine, the combination with a paper carriage, a movable type shuttle and a printing hammer, of an impact strip arranged to be located at the printing point of the machine between the hammer and the type shuttle, and an auxiliary mov able frame for carrying the same whereby the said strip may be thrown into and out of its operative positic at will.

2. The combinr n with the printing elements of a type iting machine, of an im pact strip, and s: auxiliary movable frame or carrier therefor, the said frame or carrier being arranged to he moved from one position to another to thereby throw the impact strip into and out of an operative position.

3. The combination with the printing elements of a typewriting machine, of an auxiliary movable frame or carrier, an impact strip carried thereby, and yielding means for maintaining the said carrier in a position wherein the impact strip will be located between the said printing elements.

4. The combination with the printing elements of a typewriting machine, of an impact strip, an auxiliary movable frame or carrier therefor whereby the impact strip may be swung into and out of an operative position,

l and guides for guiding the impact strip into and out of place.

5. In a typewriting machine, the combinationv with a type shuttle a printing hammer, and a paper carriage, of an impact strip arranged to be carried by the paper carriage in a position normally located between the type shuttle and the printing hammer, an auxiliary frame or carrier comprising a longitudinally disposed rod or bar 18 and arms 17 secured thereto near the opposite ends thereof for carrying the said impact strip, yielding means for holding the carrier in its operative position, and guides for guiding the strip into and out of place as the carrier is being manipul ated.

HELEN A G. DAVIS. Vlitnesscs:

C. B. Nrn'rnnnn, ARTHUR H. CARTER.

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